# 2002 Cadillac DeVille - A bunch of electrical issues

**URL:** <https://community.cartalk.com/t/2002-cadillac-deville-a-bunch-of-electrical-issues/186442>\
**Category:** Maintenance/Repairs\
**Tags:** electrical-wiring, cadillac\
**Created:** [September 20, 2022, 12:50am UTC](https://community.cartalk.com/t/2002-cadillac-deville-a-bunch-of-electrical-issues/186442 "2022-09-20T00:50:52Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Mchud](https://avatars.discourse-cdn.com/v4/letter/m/a8b319/32.png) [@Mchud](https://community.cartalk.com/u/Mchud)\
**Post date:** [September 20, 2022, 12:50am UTC](https://community.cartalk.com/t/2002-cadillac-deville-a-bunch-of-electrical-issues/186442/1 "2022-09-20T00:50:52Z")

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electrical problems all started at same time - push button & fob trunk open - gas tank button - door lock button & remote lock fob \* note\*\* the head lights come on when remote fob is pushed to lock /unlock - interior lights - dome lights from buttons or door open - door lights however windows - cruise cont. - dash - heater / ac - sun roof - mirrors - and wipers all work  
can anybody tell me what is common to these circuits? Or has anyone seen this before?

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [September 20, 2022, 5:59pm UTC](https://community.cartalk.com/t/2002-cadillac-deville-a-bunch-of-electrical-issues/186442/2 "2022-09-20T17:59:07Z")

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> **[5 Common Symptoms of a Failing Body Control Module (BCM) - Module Experts](https://moduleexperts.com/5-common-symptoms-failing-body-control-module-bcm/)**
>
> If your BCM malfunctions, you will notice a negative effect on the operation of your vehicle. Watch out for these symptoms.

Tester

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**Author:** ![eddo](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/eddo/32/2594_2.png) [@eddo](https://community.cartalk.com/u/eddo)\
**Post date:** [September 20, 2022, 7:50pm UTC](https://community.cartalk.com/t/2002-cadillac-deville-a-bunch-of-electrical-issues/186442/3 "2022-09-20T19:50:45Z")

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first thing I tell anyone that asks about weird electrical issues on a car: check the battery. Make sure the battery is good and the connections are tight and clean. Especially if this has the side mounted battery posts that GM loves to use.